Numpyのインストール方法について教えてください。

$ python
Python 2.7.8 (default, Jul 25 2014, 14:04:36)
[GCC 4.8.3] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/site-packages/numpy-1.8.2-py2.7-cygwin-1.7.33-x86_64.egg/numpy/__init__.py", line 168, in <module>
from . import add_newdocs
File "/usr/lib/python2.7/site-packages/numpy-1.8.2-py2.7-cygwin-1.7.33-x86_64.egg/numpy/add_newdocs.py", line 13, in <module>
from numpy.lib import add_newdoc
File "/usr/lib/python2.7/site-packages/numpy-1.8.2-py2.7-cygwin-1.7.33-x86_64.egg/numpy/lib/__init__.py", line 8, in <module>
from .type_check import *
File "/usr/lib/python2.7/site-packages/numpy-1.8.2-py2.7-cygwin-1.7.33-x86_64.egg/numpy/lib/type_check.py", line 11, in <module>
import numpy.core.numeric as _nx
File "/usr/lib/python2.7/site-packages/numpy-1.8.2-py2.7-cygwin-1.7.33-x86_64.egg/numpy/core/__init__.py", line 6, in <module>
from . import multiarray
File "/usr/lib/python2.7/site-packages/numpy-1.8.2-py2.7-cygwin-1.7.33-x86_64.egg/numpy/core/multiarray.py", line 7, in <module>
__bootstrap__()
File "/usr/lib/python2.7/site-packages/numpy-1.8.2-py2.7-cygwin-1.7.33-x86_64.egg/numpy/core/multiarray.py", line 6, in __bootstrap__
imp.load_dynamic(__name__,__file__)
ImportError: Permission denied